You have to wait for your generator to generate money. You can use this money to upgrade your generator. After you upgrade 18 times, you unlock the next tier. Every time you upgrade, you get a new rank and your generator looks different. There are 19 ranks. Every time you tier up, your tick time resets. Every tier unlocks a new feature. I made the upgrade button turn green when you can afford the upgrade, because the numbers get really big really fast.
~Credits~ Credits to Coltroc for the background music. ~Tiers~ 1. This is the one you start at. (No feature) 2. Unlocks the ability to click the generator for extra money. 3. Unlocks a 2nd generator that upgrades with the first 4. Unlocks and auto clicker to click the generators once every second. 5. Unlocks criticals. Criticals have a 5% chance of happening every tick and give you 20x the normal amount of money for that tick. 6. Unlocks an ability called Overdrive that gives a x5 multiplier for MPG for 30 seconds. The cooldown is 60 seconds. 7. Unlocks coins that spawn randomly that give you extra money when clicked. Here's the code: Change money by (MPG * 100) 8. Unlocks mega coins that replace normal coins; they have the same spawn rate and give 10x as much as normal coins. Here's the code: Change money by (MPG * 1000) 9. Unlocks weather events that will happen from time to time, which will have their own effect on your generators, which can be good or bad. - Normal: No effects - Rain: Increases generator 1's money. - Dust Storm: Increases both generators money but decreases click power. - Thunder Storm: Lightning strikes randomly giving some money and doesn't affect generators at all. ~Tier Plans~ 10. Unlocks more weather events. - Blizzard: Decreases auto production but coins and mega coins give double rewards. -Wind Storm: Doesn't affect generators. Makes coins fly across the screen making them harder to get but triples the rewards. - Heat Wave: Both generators income is doubled but every 30 seconds income is disabled for 5 seconds because they overheat. - Foggy: Coins are harder to see but the reward is doubled. -Meteor Shower: Meteors spawn every 1 - 3 seconds and when clicked gives 5 seconds worth of MPG. - Rainbow: MPG is quadrupled and coin spawn rate is doubled. This one has 0 downsides. 11. Unlocks the feature to switch generator modes between power mode and speed mode. The power mode generates slower but gives more money. The speed mode generates faster but gives less money. 12. Makes it to where your WaitTime doesn't reset after tiering up.